Pneumatic-tire tube



. HUMPHREY. PNEUMATIC TIRE TUBE. APPLICATION FILE-D ocrL 25, 1919.

Patented May 23, 1922.

ORSON J. l-IUMPHREY, GF ELYRIA, OHIO,

PNEUMATICI-TIRE TUBE.

ldiy.

. Application To UN i0 71 om il; may concern.

Be it lrnown that l, @risen fl. llorar-Hunt, a citizen of the nited States, residing at Elyria, in the county of Lorain and State of (lhio, have invented certain new and useful improvements in Pneumatic-Tire rl`ubes; and l do hereby declare the following to be a. full, clear, and enact descriptionof the invention, such as will enable others skilled in the art to which it appertains to maire and use the same.

My invention relates to pneumatic tire tubes. its principal object being to provide an inner tube which will obviate punctures, blowouts and other tire trouble and which at the same time possesses the usual resilient qualities.

A.. further object vof the invention is to provide a reinforced pneumatic tube which is formed from a sheet of re atively stout material such as canvas impregnated with rubber to render it air tight, the longitudinal edges of the latter being connected through the .medium of an elastic strip to permit the tube to expand, the elastic strip being disposed in such a manner as to be prevented from becoming injured.

Still another object of the invention to provide a pneumatic tube now in Luse and which will not creep within the tube.

Another object of the invention is to provide a pneumatic tire which is simple in construction, consists of few parts. and which may be manufactured and sold at a comparatively low cost.

lVith the above and other objects in mind, the invention consists in the novel combination of elements, construction and rangement, and specific features all of which will be hereinafter enlarged upon and er:- plicity defined in the appended claim.

On the drawings:

Figure l is fragment-ary side elevation of the tire tube constructed in accordance with my invention; Y

Figure 2 is a transverse sectional view of the same; and

Figure 3 is a. transverse sectional view of the conventional tire tube and showing the tube accommodated therein in inflated condition.

Referring to the drawing wherein like characters of reference designate like parts Specification of Letters Patent.

filed October 25, 191%.

Patented May 233, i922.

Serial No. 333,259.

in all the views the numeral 5 designates a sheet of fabric such as canvas or any other stout material of suiiicient strength to prevent sharp objects penetrating the same. The sheet 5 is impregnated with rubber designated at 6 to render the sheet air tight. The impregnated sheet is rolled in tubular format-ion and secured to one of its longitudinal edges is a longitudinal elastic strip 7. This strip 7 is provided with longitudinal corrugations and is adapted to lie within the tire shoe as illustrated in Figure 2 and has its opposite longitudinal edge secured to the inner face of the sheet as indicated at 8 at a point remote from the free longitudinal edge of the tube. By attaching this edge of the strip to the tube as illustrated, a flap 9 is afforded which overlies the elastic strip and protects the same when the tube is in position in the tire casing. is illustrated in Figure 3 the elastic strip 8 permits the tube to conform to the contour of the casing designated when iniiated. The usual inflating valve is designated at l0 and is mounted on the elastic strip 7. ln order to retain the tube against creeping within the lshoe or casing. the crest of tbe tube is formed with vacuum projections or cups ll that contact with thc inner face of the tire casin rlhe structure shown and described is a 'actical embodiment of the invention but it will be understood that the saine may be embodied in other constructions. and that my limits of such embodimei'ite are governed by what is claimed.

llihat is claimed is:

v.be structure materiel having; continuous impregnated 'with rubber continuous elastic means vulcanized to `ib ier including a portion bridgingT v portions of said materia.. a conious protecting flap ente ding from, free and bevond one of said portions to cover the bridging portion of the elastic means, and means extending` from. the exterior of said materialr to engage the inner wall of a shoe to prevent creeping.

ln testimony whereof l aiii; my signature in presence of two witnesses.

ORSON J. HUMPHBEY.

Witnesses GEO. W. CHAMBERLAIN, L. D. HAMLIN. C 

